T-Type Multilevel Converter Topologies: A Comprehensive Review

Salem, A.; Abido, M. A.

doi:10.1007/s13369-018-3506-6

Cited by 55 publications

(29 citation statements)

References 98 publications

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“…First of all, the multi-level inverters have a number of advantages over conventional H-bridge inverters, including better Electromagnetic Compatibility EMC and higher efficiency [14,[22][23][24], which are extremely important for wireless power transmission systems [24]. However, analysis of the existed publications shows that using of multi-level inverters for WPT systems are just at the beginning stage [25].…”

Section: Case Study System Descriptionmentioning

confidence: 99%

“…Each multi-level circuit has its advantages and disadvantages, but among these types, T-type has some advantages over other types: smaller size, simpler operation principles, lower THD, lower conduction losses and smaller number of semiconductors [10,14,23]. The most important advantage of T-type solution in the WPT application is that only half of dc-link voltage applied to the primary side coil which in turn reduces the primary inductance and size of the coil [14].…”

Section: Case Study System Descriptionmentioning

confidence: 99%

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Feasibility Study GaN Transistors Application in the Novel Split-Coils Inductive Power Transfer System with T-Type Inverter

et al. 2020

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A promising solution for inductive power transfer and wireless charging is presented on the basis of a single-phase three-level T-type Neutral Point Clamped GaN-based inverter with two coupled transmitting coils. The article focuses on the feasibility study of GaN transistor application in the wireless power transfer system based on the T-type inverter on the primary side. An analysis of power losses in the main components of the system is performed: semiconductors and magnetic elements. System modeling was performed using Power Electronics Simulation Software (PSIM). It is shown that the main losses of the system are static losses in the filter inductor and rectifier diodes on the secondary side, while GaN transistors can be successfully used for the wireless power transfer system. The main features of the Printed Circuit Board (PCB) design of GaN transistors are considered in advance.

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Section: Case Study System Descriptionmentioning

confidence: 99%

Section: Case Study System Descriptionmentioning

confidence: 99%

Feasibility Study GaN Transistors Application in the Novel Split-Coils Inductive Power Transfer System with T-Type Inverter

et al. 2020

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“…Recently, Silicon Carbide (SiC) MOSFET is chosen in electrical drives converters due to its fast response and lower on-and off-transitions compared to conventional silicon semiconductor technologies [10]. Nevertheless, this fast response SiC semiconductors makes ringing and spikes in the generated voltages in power circuits and printed circuit boards (PCBs).…”

Section: Introductionmentioning

confidence: 99%

Design, Implementation and Control of a SiC-Based T5MLC Induction Drive System

Salem

2020

IEEE Access

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This paper presents and evaluate a prototype of an advanced topology of five-level T-type MLC, namely ''T5MLC'', implemented within a complete AC induction drive. The evaluation is based on the ability of balancing the converter DC link capacitor voltages, the torque and flux ripples reduction of the induction motor under control, the harmonic analysis and the efficiency of the inverter and the overall drive system. The converter implementation and design considerations using Silicon Carbide (SiC) discrete MOSFETs are discussed. The operation and the analytical model of T5MLC using switching-functions are presented. The model predictive control (MPC), as a preferred AC drive control approach, is selected to adapt the machine torque and flux, and to balance the DC link capacitor voltages. The T5MLC drive system is tested at different scenarios; i.e. suddenly load changing and speed reversal, to ensure the converter capability and excellent performance in AC drive applications. The experimental results show that the MPC could achieve an excellent performance in terms of low harmonic distortions, reduced flux and torque ripples and the ability of balanced DC link capacitors. In addition, the loss analysis showed that the T5MLC is 5.5 % to 24.8 % efficient compared to dual T-type MLC at different loading conditions.

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“…For the three-level inverter, based on the T-type leg, was presented thirty-five years ago for motor drives, with the bidirectional medium switch being realized with thyristors and improved with GTO-thyristors [11]. After some years, many configurations based on the well-known three-level T-type NPC leg can be found in the literature [12]. In [13] a five-level TNPC (5L-TNPC) was introduced, which corresponds to the parallel connection of two 3L-TNPC legs [14,15].…”

Section: Introductionmentioning

confidence: 99%

“…In fact, in [19] a symmetrical nine-level T-type converter (9L-TNPC) is presented for motor drive applications, which is based on the cascade connection of two 5L-TNPC converters. The same number of levels can be generated with advanced hybrid topologies as presented in [6,12].…”

Section: Introductionmentioning

confidence: 99%

Five-Level T-type Cascade Converter for Rooftop Grid-Connected Photovoltaic Systems

et al. 2019

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Multilevel converters are widely considered to be the most suitable configurations for renewable energy sources. Their high-power quality, efficiency and performance make them interesting for PV applications. In low-power applications such as rooftop grid-connected PV systems, power converters with high efficiency and reliability are required. For this reason, multilevel converters based on parallel and cascaded configurations have been proposed and commercialized in the industry. Motivated by the features of multilevel converters based on cascaded configurations, this work presents the modulation and control of a rooftop single-phase grid-connected photovoltaic multilevel system. The configuration has a symmetrical cascade connection of two three-level T-type neutral point clamped power legs, which creates a five-level converter with two independent string connections. The proposed topology merges the benefits of multi-string PV and symmetrical cascade multilevel inverters. The switching operation principle, modulation technique and control scheme under an unbalanced power operation among the cell are addressed. Simulation and experimental validation results in a reduced-scale power single-phase converter prototype under variable conditions at different set points for both PV strings are presented. Finally, a comparative numerical analysis between other T-type configurations to highlight the advantages of the studied configuration is included.

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T-Type Multilevel Converter Topologies: A Comprehensive Review

Cited by 55 publications

References 98 publications

Feasibility Study GaN Transistors Application in the Novel Split-Coils Inductive Power Transfer System with T-Type Inverter

Feasibility Study GaN Transistors Application in the Novel Split-Coils Inductive Power Transfer System with T-Type Inverter

Design, Implementation and Control of a SiC-Based T5MLC Induction Drive System

Five-Level T-type Cascade Converter for Rooftop Grid-Connected Photovoltaic Systems

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